X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Futil.cc;h=3ab864c2ff5db919c31b5224dc5731dd52379444;hb=59f63e2b6d0dba963faee7dfee54fbb48dee396a;hp=20b7ba4706d97ecb6ee989a2a8b62a16629319fd;hpb=b5b97ce4ddb978369c5a07f2a5f1cb3347156721;p=dcpomatic.git diff --git a/src/lib/util.cc b/src/lib/util.cc index 20b7ba470..3ab864c2f 100644 --- a/src/lib/util.cc +++ b/src/lib/util.cc @@ -37,9 +37,6 @@ #include "md5_digester.h" #include "audio_processor.h" #include "safe_stringstream.h" -#ifdef DCPOMATIC_WINDOWS -#include "stack.hpp" -#endif #include #include #include @@ -69,6 +66,7 @@ extern "C" { #include #ifdef DCPOMATIC_WINDOWS #include +#include #endif #include #include @@ -88,20 +86,14 @@ using std::setfill; using std::ostream; using std::endl; using std::vector; -using std::hex; -using std::setw; -using std::ios; using std::min; using std::max; using std::list; using std::multimap; -using std::map; using std::istream; -using std::numeric_limits; using std::pair; using std::cout; using std::bad_alloc; -using std::streampos; using std::set_terminate; using boost::shared_ptr; using boost::thread; @@ -109,6 +101,10 @@ using boost::optional; using dcp::Size; using dcp::raw_convert; +/** Path to our executable, required by the stacktrace stuff and filled + * in during App::onInit(). + */ +string program_name; static boost::thread::id ui_thread; static boost::filesystem::path backtrace_file; @@ -130,9 +126,9 @@ seconds_to_hms (int s) SafeStringStream hms; hms << h << N_(":"); hms.width (2); - hms << std::setfill ('0') << m << N_(":"); + hms << setfill ('0') << m << N_(":"); hms.width (2); - hms << std::setfill ('0') << s; + hms << setfill ('0') << s; return hms.str (); } @@ -192,65 +188,6 @@ seconds_to_approximate_hms (int s) return ap.str (); } -#ifdef DCPOMATIC_POSIX -/** @param l Mangled C++ identifier. - * @return Demangled version. - */ -static string -demangle (string l) -{ - string::size_type const b = l.find_first_of (N_("(")); - if (b == string::npos) { - return l; - } - - string::size_type const p = l.find_last_of (N_("+")); - if (p == string::npos) { - return l; - } - - if ((p - b) <= 1) { - return l; - } - - string const fn = l.substr (b + 1, p - b - 1); - - int status; - try { - - char* realname = abi::__cxa_demangle (fn.c_str(), 0, 0, &status); - string d (realname); - free (realname); - return d; - - } catch (std::exception) { - - } - - return l; -} - -/** Write a stacktrace to an ostream. - * @param out Stream to write to. - * @param levels Number of levels to go up the call stack. - */ -void -stacktrace (ostream& out, int levels) -{ - void *array[200]; - size_t size = backtrace (array, 200); - char** strings = backtrace_symbols (array, size); - - if (strings) { - for (size_t i = 0; i < size && (levels == 0 || i < size_t(levels)); i++) { - out << N_(" ") << demangle (strings[i]) << "\n"; - } - - free (strings); - } -} -#endif - /** @param v Version as used by FFmpeg. * @return A string representation of v. */ @@ -269,15 +206,70 @@ seconds (struct timeval t) } #ifdef DCPOMATIC_WINDOWS -LONG WINAPI exception_handler(struct _EXCEPTION_POINTERS *) + +/** Resolve symbol name and source location given the path to the executable */ +int +addr2line (void const * const addr) +{ + char addr2line_cmd[512] = { 0 }; + sprintf (addr2line_cmd, "addr2line -f -p -e %.256s %p > %s", program_name.c_str(), addr, backtrace_file.string().c_str()); + return system(addr2line_cmd); +} + +/** This is called when C signals occur on Windows (e.g. SIGSEGV) + * (NOT C++ exceptions!). We write a backtrace to backtrace_file by dark means. + * Adapted from code here: http://spin.atomicobject.com/2013/01/13/exceptions-stack-traces-c/ + */ +LONG WINAPI +exception_handler(struct _EXCEPTION_POINTERS * info) { - dbg::stack s; FILE* f = fopen_boost (backtrace_file, "w"); - fprintf (f, "Exception thrown:"); - for (dbg::stack::const_iterator i = s.begin(); i != s.end(); ++i) { - fprintf (f, "%p %s %d %s\n", i->instruction, i->function.c_str(), i->line, i->module.c_str()); + fprintf (f, "C-style exception %d\n", info->ExceptionRecord->ExceptionCode); + fclose(f); + + if (info->ExceptionRecord->ExceptionCode != EXCEPTION_STACK_OVERFLOW) { + CONTEXT* context = info->ContextRecord; + SymInitialize (GetCurrentProcess (), 0, true); + + STACKFRAME frame = { 0 }; + + /* setup initial stack frame */ +#if _WIN64 + frame.AddrPC.Offset = context->Rip; + frame.AddrStack.Offset = context->Rsp; + frame.AddrFrame.Offset = context->Rbp; +#else + frame.AddrPC.Offset = context->Eip; + frame.AddrStack.Offset = context->Esp; + frame.AddrFrame.Offset = context->Ebp; +#endif + frame.AddrPC.Mode = AddrModeFlat; + frame.AddrStack.Mode = AddrModeFlat; + frame.AddrFrame.Mode = AddrModeFlat; + + while ( + StackWalk ( + IMAGE_FILE_MACHINE_I386, + GetCurrentProcess (), + GetCurrentThread (), + &frame, + context, + 0, + SymFunctionTableAccess, + SymGetModuleBase, + 0 + ) + ) { + addr2line((void *) frame.AddrPC.Offset); + } + } else { +#ifdef _WIN64 + addr2line ((void *) info->ContextRecord->Rip); +#else + addr2line ((void *) info->ContextRecord->Eip); +#endif } - fclose (f); + return EXCEPTION_CONTINUE_SEARCH; } #endif @@ -288,7 +280,11 @@ set_backtrace_file (boost::filesystem::path p) backtrace_file = p; } -/* From http://stackoverflow.com/questions/2443135/how-do-i-find-where-an-exception-was-thrown-in-c */ +/** This is called when there is an unhandled exception. Any + * backtrace in this function is useless on Windows as the stack has + * already been unwound from the throw; we have the gdb wrap hack to + * cope with that. + */ void terminate () { @@ -310,9 +306,6 @@ terminate () << std::endl; } -#ifdef DCPOMATIC_POSIX - stacktrace (cout, 50); -#endif abort(); } @@ -654,7 +647,7 @@ stride_round_up (int c, int const * stride, int t) int round_to (float n, int r) { - assert (r == 1 || r == 2 || r == 4); + DCPOMATIC_ASSERT (r == 1 || r == 2 || r == 4); return int (n + float(r) / 2) &~ (r - 1); } @@ -759,13 +752,13 @@ get_optional_int (multimap const & kv, string k) void ensure_ui_thread () { - assert (boost::this_thread::get_id() == ui_thread); + DCPOMATIC_ASSERT (boost::this_thread::get_id() == ui_thread); } string audio_channel_name (int c) { - assert (MAX_DCP_AUDIO_CHANNELS == 12); + DCPOMATIC_ASSERT (MAX_DCP_AUDIO_CHANNELS == 12); /// TRANSLATORS: these are the names of audio channels; Lfe (sub) is the low-frequency /// enhancement channel (sub-woofer). HI is the hearing-impaired audio track and @@ -823,52 +816,6 @@ tidy_for_filename (string f) return t; } -map -split_get_request (string url) -{ - enum { - AWAITING_QUESTION_MARK, - KEY, - VALUE - } state = AWAITING_QUESTION_MARK; - - map r; - string k; - string v; - for (size_t i = 0; i < url.length(); ++i) { - switch (state) { - case AWAITING_QUESTION_MARK: - if (url[i] == '?') { - state = KEY; - } - break; - case KEY: - if (url[i] == '=') { - v.clear (); - state = VALUE; - } else { - k += url[i]; - } - break; - case VALUE: - if (url[i] == '&') { - r.insert (make_pair (k, v)); - k.clear (); - state = KEY; - } else { - v += url[i]; - } - break; - } - } - - if (state == VALUE) { - r.insert (make_pair (k, v)); - } - - return r; -} - dcp::Size fit_ratio_within (float ratio, dcp::Size full_frame, int round) { @@ -925,50 +872,6 @@ dependency_version_summary () return s.str (); } -/** Construct a ScopedTemporary. A temporary filename is decided but the file is not opened - * until ::open() is called. - */ -ScopedTemporary::ScopedTemporary () - : _open (0) -{ - _file = boost::filesystem::temp_directory_path() / boost::filesystem::unique_path (); -} - -/** Close and delete the temporary file */ -ScopedTemporary::~ScopedTemporary () -{ - close (); - boost::system::error_code ec; - boost::filesystem::remove (_file, ec); -} - -/** @return temporary filename */ -char const * -ScopedTemporary::c_str () const -{ - return _file.string().c_str (); -} - -/** Open the temporary file. - * @return File's FILE pointer. - */ -FILE* -ScopedTemporary::open (char const * params) -{ - _open = fopen (c_str(), params); - return _open; -} - -/** Close the file */ -void -ScopedTemporary::close () -{ - if (_open) { - fclose (_open); - _open = 0; - } -} - ContentTimePeriod subtitle_period (AVSubtitle const & sub) {